// sch_data_read(x, y, z)

var xx, yy, zz, t, d;
xx = argument0;
yy = argument1;
zz = argument2;


t = xx * 2000 * 256 + zz * 2000 + yy;
d = sqrt(2000 * 256 * 2000);
return sch_data[t div d, t mod d];
